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September 1, 2026Heart Lung and CirculationOpen Access

Patent false lumen in ATAAD is linked to ~10-fold higher long-term mortality versus thrombosed lumen.

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Why the study?

False lumen patency in acute type A aortic dissection is associated with adverse outcomes, but the role of coagulation defects in predicting false lumen fate is unclear.

Does a patent false lumen compared to a thrombosed false lumen reduce long-term survival in patients with acute type A aortic dissection?

Population

123 patients with acute type A aortic dissection

Comparison

Patent false lumen vs thrombosed false lumen

Design

Single-centre retrospective case-controlled study

Follow-up

Maximum 8.61 years

Key result

A patent false lumen in acute type A aortic dissection was associated with significantly reduced long-term survival compared to a thrombosed false lumen (HR 10.2; 95% CI 3.00-34.6; p<0.001).

Authors

YTYattheesh ThanalingamDFDaniel FuduluKBKelly Byrne

Discussion

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Member takes

Overview

May support coagulation profiling for FL risk stratification in TAAD; leaves open confirmation in prospective cohorts.

Study Design

Type

Case-Control (n=123)

Multicenter

No

Structured PICO

Does a patent false lumen compared to a thrombosed false lumen reduce long-term survival in patients with acute type A aortic dissection?

P
Population
123 patients with acute type A aortic dissection, followed for up to 8.61 years to compare outcomes between patent and thrombosed false lumens.
E
Exposure
Patent false lumen (FL)
C
Comparator
Thrombosed false lumen (FL)
O
Outcome
Long-term survivalhard clinical

Main Result

Hazard Ratio: 10.2 (95% CI 3–34.6)

p-value: p=<0.001

In patients with acute type A aortic dissection, a patent false lumen is associated with significantly reduced long-term survival and is predicted by intrinsic pathway coagulation abnormalities.

Cite This Study

Thanalingam et al. (2026) conducted a case-control in Acute type A aortic dissection (TAAD) (n=123). Patent false lumen vs. Thrombosed false lumen was evaluated on long-term survival (HR 10.2, 95% CI 3.00-34.6, p=<0.001). A patent false lumen in acute type A aortic dissection was associated with significantly reduced long-term survival compared to a thrombosed false lumen (HR 10.2; 95% CI 3.00-34.6; p<0.001).

synapsesocial.com/papers/6aa9f4ee5da1df31648442ddhttps://doi.org/10.1016/j.hlc.2026.04.119
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Also Consider

Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

  1. 1Persistency of the false lumen increases late mortality in acute aortic dissection: A systematic review and meta-analysis2026
  2. 2Partial thrombosis of the false lumen in patients with acute type B aortic dissection. N Engl J Med. 2007;357:349-3592008 · 3 citations
  3. 3Partial thrombosis of the false lumen influences aortic growth in type B dissection.2014 · 9 citations
  4. 4Impact of False Lumen Volume on Admission Coagulopathy in Acute Type A Aortic Dissection2026 · 1 citations
  5. 5Acute type A aortic dissection and the consequences of a patent false lumen2021 · 37 citations